ottie: Add a command-line tool
Supports: * Taking a screenie: ottie image file.lottie image.png * Recording a rendernode: ottie node file.lottie render.node * Encoding an image: ottie video file.lottie video.webm
This commit is contained in:
Benjamin Otte
@@ -679,6 +679,7 @@ subdir('gdk')
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subdir('gsk')
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subdir('ottie')
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subdir('gtk')
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subdir('ottie/tools')
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subdir('modules')
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if get_option('demos')
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subdir('demos')
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19
ottie/tools/meson.build
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19
ottie/tools/meson.build
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@@ -0,0 +1,19 @@
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# Installed tools
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ottie_tools = [
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['ottie', ['ottie.c']],
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]
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foreach tool: ottie_tools
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tool_name = tool.get(0)
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tool_srcs = tool.get(1)
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exe = executable(tool_name,
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sources: tool_srcs,
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include_directories: [confinc],
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c_args: common_cflags,
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dependencies: [libgtk_dep],
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install: true,
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)
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set_variable(tool_name.underscorify(), exe) # used in testsuites
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endforeach
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416
ottie/tools/ottie.c
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416
ottie/tools/ottie.c
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@@ -0,0 +1,416 @@
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/*
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* Copyright © 2020 Benjamin Otte
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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* Authors: Benjamin Otte <otte@gnome.org>
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*/
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#include "config.h"
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#include <ottie/ottie.h>
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#include <gtk/gtk.h>
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#include <glib/gi18n.h>
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static GskRenderNode *
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snapshot_paintable (GdkPaintable *paintable,
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int width,
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int height)
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{
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GtkSnapshot *snapshot;
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snapshot = gtk_snapshot_new ();
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gdk_paintable_snapshot (paintable, snapshot, width, height);
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return gtk_snapshot_free_to_node (snapshot);
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}
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static void
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draw_paintable (GdkPaintable *paintable,
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cairo_surface_t *surface)
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{
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cairo_t *cr;
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GskRenderNode *node;
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node = snapshot_paintable (paintable,
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cairo_image_surface_get_width (surface),
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cairo_image_surface_get_height (surface));
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cr = cairo_create (surface);
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cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
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cairo_paint (cr);
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cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
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if (node)
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{
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gsk_render_node_draw (node, cr);
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gsk_render_node_unref (node);
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}
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cairo_destroy (cr);
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}
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static gboolean
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save_paintable_to_png (GdkPaintable *paintable,
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const char *filename,
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int width,
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int height)
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{
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cairo_surface_t *surface;
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cairo_status_t status;
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surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
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draw_paintable (paintable, surface);
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status = cairo_surface_write_to_png (surface, filename);
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if (status != CAIRO_STATUS_SUCCESS)
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g_printerr (_("Failed to save to \"%s\": %s\n"), filename, cairo_status_to_string (status));
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cairo_surface_destroy (surface);
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return status == CAIRO_STATUS_SUCCESS;
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}
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static gboolean
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save_paintable_to_node (GdkPaintable *paintable,
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const char *filename,
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int width,
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int height)
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{
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GskRenderNode *node;
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GError *error = NULL;
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gboolean result;
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node = snapshot_paintable (GDK_PAINTABLE (paintable), width, height);
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if (node == NULL)
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result = g_file_set_contents (filename, "", 0, &error);
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else
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{
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result = gsk_render_node_write_to_file (node, filename, &error);
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gsk_render_node_unref (node);
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}
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if (!result)
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{
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g_printerr ("%s\n", error->message);
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g_error_free (error);
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}
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return result;
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}
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static int
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usage (void)
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{
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g_print (_("Usage:\n"
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"ottie [COMMAND] [OPTION…] FILEs\n"
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" Perform various tasks on a Lottie file.\n"
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"\n"
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"ottie image [OPTION…] FILE IMAGE-FILE\n"
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" Save a PNG of the given input file.\n"
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" --time=[timestamp] Forward to [timestamp] seconds\n"
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" --size=[max] Resize larger dimension to [max]\n"
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"\n"
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"ottie node [OPTION…] FILE NODE-FILE\n"
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" Save a rendernode file of the given input file.\n"
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" --time=[timestamp] Forward to [timestamp] seconds\n"
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" --size=[max] Resize larger dimension to [max]\n"
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"\n"
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"ottie video [OPTION…] FILE VIDEO-FILE\n"
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" Save a WebM of the given input file.\n"
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" --size=[max] Resize larger dimension to [max]\n"
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"\n"
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"ottie show [OPTION…] FILE\n"
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" Show a small video player for the given file.\n"
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"\n"
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"Perform various tasks on Lottie files.\n"));
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return 1;
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}
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static void
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paintable_get_size (OttiePaintable *paintable,
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int desired,
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int *out_width,
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int *out_height)
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{
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int width, height;
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width = gdk_paintable_get_intrinsic_width (GDK_PAINTABLE (paintable));
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height = gdk_paintable_get_intrinsic_height (GDK_PAINTABLE (paintable));
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if (desired > 0)
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{
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if (width > height)
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{
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height = (height * desired + width - 1) / width;
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width = desired;
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}
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else
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{
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width = (width * desired + width - 1) / height;
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height = desired;
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}
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}
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*out_width = width;
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*out_height = height;
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}
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static int
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do_image (int argc,
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const char *argv[],
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gboolean do_node)
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{
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OttieCreation *ottie;
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OttiePaintable *paintable;
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int width, height;
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int result = 0;
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double timestamp = 0;
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int desired_size = -1;
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while (TRUE)
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{
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if (argc == 0)
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return usage();
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if (strncmp (argv[0], "--time=", strlen ("--time=")) == 0)
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{
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timestamp = atof (argv[0] + strlen ("--time="));
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}
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else if (strncmp (argv[0], "--size=", strlen ("--size=")) == 0)
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{
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desired_size = atoi (argv[0] + strlen ("--size="));
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}
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else
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break;
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argc--;
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argv++;
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}
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if (argc != 2)
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return usage();
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ottie = ottie_creation_new_for_filename (argv[0]);
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if (ottie == NULL)
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{
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g_printerr ("Someone figure out error handling for loading ottie files.\n");
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return 1;
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}
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while (ottie_creation_is_loading (ottie))
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g_main_context_iteration (NULL, TRUE);
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paintable = ottie_paintable_new (ottie);
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ottie_paintable_set_timestamp (paintable, round (timestamp * G_USEC_PER_SEC));
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paintable_get_size (paintable, desired_size, &width, &height);
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if (do_node)
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{
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if (!save_paintable_to_node (GDK_PAINTABLE (paintable), argv[1], width, height))
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result = 1;
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}
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else
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{
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if (!save_paintable_to_png (GDK_PAINTABLE (paintable), argv[1], width, height))
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result = 1;
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}
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g_object_unref (paintable);
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return result;
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}
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static int
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do_video (int argc,
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const char *argv[])
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{
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OttieCreation *ottie;
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OttiePaintable *paintable;
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int width, height;
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int result = 0;
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double timestamp;
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int desired_size = -1;
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GSubprocess *process;
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GError *error = NULL;
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GOutputStream *pipe;
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cairo_surface_t *surface;
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char *width_string, *height_string;
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char *location_string;
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while (TRUE)
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{
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if (argc == 0)
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return usage();
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if (strncmp (argv[0], "--size=", strlen ("--size=")) == 0)
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{
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desired_size = atoi (argv[0] + strlen ("--size="));
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}
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else
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break;
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argc--;
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argv++;
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}
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if (argc != 2)
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return usage();
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ottie = ottie_creation_new_for_filename (argv[0]);
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if (ottie == NULL)
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{
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g_printerr ("Someone figure out error handling for loading ottie files.\n");
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return 1;
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}
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while (ottie_creation_is_loading (ottie))
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g_main_context_iteration (NULL, TRUE);
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paintable = ottie_paintable_new (ottie);
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paintable_get_size (paintable, desired_size, &width, &height);
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width_string = g_strdup_printf ("width=%d", width);
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height_string = g_strdup_printf ("height=%d", height);
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location_string = g_strdup_printf ("location=%s", argv[1]);
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process = g_subprocess_new (G_SUBPROCESS_FLAGS_STDIN_PIPE,
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&error,
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"gst-launch-1.0",
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"fdsrc",
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"!", "rawvideoparse", "use-sink-caps=false", width_string, height_string,
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G_BYTE_ORDER == G_LITTLE_ENDIAN ? "format=bgra" : "format=argb",
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"!", "videoconvert",
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"!", "vp9enc",
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"!", "webmmux",
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"!", "filesink", location_string,
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NULL);
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g_free (width_string);
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g_free (height_string);
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g_free (location_string);
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if (process == NULL)
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{
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g_printerr ("%s\n", error->message);
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g_error_free (error);
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g_object_unref (paintable);
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return 1;
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}
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surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
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pipe = g_subprocess_get_stdin_pipe (process);
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for (timestamp = 0; timestamp <= ottie_paintable_get_duration (paintable); timestamp += G_USEC_PER_SEC / 25)
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{
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ottie_paintable_set_timestamp (paintable, timestamp);
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draw_paintable (GDK_PAINTABLE (paintable), surface);
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if (!g_output_stream_write_all (pipe,
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cairo_image_surface_get_data (surface),
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width * height * 4,
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NULL,
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NULL,
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&error))
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{
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g_printerr ("%s\n", error->message);
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g_clear_error (&error);
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result = 1;
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break;
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}
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}
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if (!g_output_stream_close (pipe, NULL, &error))
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{
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g_printerr ("%s\n", error->message);
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g_error_free (error);
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result = 1;
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}
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if (!g_subprocess_wait (process, NULL, &error))
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{
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g_printerr ("%s\n", error->message);
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g_error_free (error);
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result = 1;
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}
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else if (!g_subprocess_get_successful (process))
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{
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g_printerr ("Encoder failed to write video.\n");
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result = 1;
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}
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g_object_unref (process);
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g_object_unref (paintable);
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return result;
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}
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static int
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do_show (int argc,
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const char *argv[])
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{
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OttiePlayer *player;
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GtkWidget *video, *window;
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if (argc != 1)
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return usage();
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player = ottie_player_new_for_filename (argv[0]);
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window = gtk_window_new ();
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gtk_window_set_title (GTK_WINDOW (window), argv[0]);
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g_signal_connect (window, "destroy", G_CALLBACK (gtk_window_destroy), NULL);
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video = gtk_video_new ();
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gtk_video_set_loop (GTK_VIDEO (video), TRUE);
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gtk_video_set_autoplay (GTK_VIDEO (video), TRUE);
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gtk_video_set_media_stream (GTK_VIDEO (video), GTK_MEDIA_STREAM (player));
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gtk_window_set_child (GTK_WINDOW (window), video);
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gtk_widget_show (window);
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while (g_list_model_get_n_items (gtk_window_get_toplevels ()) > 0)
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g_main_context_iteration (NULL, TRUE);
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return 0;
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}
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int
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main (int argc,
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const char *argv[])
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{
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int result;
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g_set_prgname ("ottie");
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gtk_init ();
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if (argc < 3)
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return usage ();
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if (strcmp (argv[2], "--help") == 0)
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return usage ();
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argv++;
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argc--;
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if (strcmp (argv[0], "image") == 0)
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result = do_image (argc - 1, argv + 1, FALSE);
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else if (strcmp (argv[0], "node") == 0)
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result = do_image (argc - 1, argv + 1, TRUE);
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else if (strcmp (argv[0], "video") == 0)
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result = do_video (argc - 1, argv + 1);
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else if (strcmp (argv[0], "view") == 0 ||
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strcmp (argv[0], "show") == 0)
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result = do_show (argc - 1, argv + 1);
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else
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return usage ();
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return result;
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}
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Reference in New Issue
Block a user